CVE-2026-67332CWE-285

CVE-2026-67332

Medium · published August 1, 2026

CVSS v3.1
6.4
EPSS
0%
Percentile
16.7
In the wild
Unconfirmed
What it is

@better-auth/oauth-provider before 1.7.0-beta.4 fails to bind access-token audience to the authorization grant, allowing clients to request tokens for unrelated resources. Attackers can complete an OAuth flow and obtain access tokens whose audience targets resource servers the authorization never covered, bypassing intended authorization boundaries.

The record
Technical detail
CVSS v3.1
6.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00260 · 16.7th percentile
Weakness
CWE-285 · Improper Authorization
Published
2026-08-01T17:17Z
References (2)
https://github.com/better-auth/better-auth/security/advisories/GHSA-p2fr-6hmx-4528 · [email protected]https://www.vulncheck.com/advisories/better-auth-oauth-provider-before-beta-4-authorization-bypass · [email protected]
EPSS history
Timeline
  • 01 AUG 12:22Z
    @better-auth/oauth-provider before 1.7.0-beta.4 Authorization Bypass
    cvelistv5